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public class Number {    private int num;        public Number(int n) {       num = n;    }    /* Type your code here */        public int getNum() {       return num;    }        public void setNum(int n) {       num = n;    }    public static void main(String [] args) {       Number yourNum = new Number(723);       System.out.print(yourNum);    } }

public class Number {    private int num;        public Number(int n) {       num = n;    }    /* Type your code here */        public int getNum() {       return num;    }        public void setNum(int n) {       num = n;    }    public static void main(String [] args) {       Number yourNum = new Number(723);       System.out.print(yourNum);    } }

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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public class Number {
   private int num;
   
   public Number(int n) {
      num = n;
   }

   /* Type your code here */
   
   public int getNum() {
      return num;
   }
   
   public void setNum(int n) {
      num = n;
   }

   public static void main(String [] args) {
      Number yourNum = new Number(723);
      System.out.print(yourNum);
   }
}

Write a `toString()` method for the Number class, which returns a String representation of a Number object. The String should be in the format "The value is yourNum", where yourNum is the value of the integer instance field from the Number class. **Example:** If the input is: ``` 723 ``` then the output is: ``` The value is 723 ``` Your Number.java file must define the method: ```java public String toString() ```
Transcribed Image Text:Write a `toString()` method for the Number class, which returns a String representation of a Number object. The String should be in the format "The value is yourNum", where yourNum is the value of the integer instance field from the Number class. **Example:** If the input is: ``` 723 ``` then the output is: ``` The value is 723 ``` Your Number.java file must define the method: ```java public String toString() ```
**Lab Activity: 26.21.1 - The toString() Method** **Current File: LabProgram.java** ```java import java.util.Scanner; public class LabProgram { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); int inputNum = scnr.nextInt(); Number yourNum = new Number(inputNum); System.out.print(yourNum); } } ``` **Description:** In this lab activity, you'll be exploring the `toString()` method in Java. The program includes the basic setup for a Java class named `LabProgram`. It demonstrates the use of a `Scanner` object to read an integer from user input. This integer is then used to create an instance of an object named `yourNum` from a class called `Number`. Finally, it prints the object `yourNum`. **Key Concepts:** - **`Scanner` Class**: Used for obtaining input of primitive types like `int`. - **Integer Input**: Captures a single integer input from the user. - **`Number` Class**: Assumes existence; likely contains an overridden `toString()` method for meaningful output. - **Printing Objects**: The `System.out.print(yourNum);` statement will call the `toString()` method of the `Number` class, if it exists, to convert the object to a `String` representation for printing. Make sure you implement or verify the `Number` class and its `toString()` method to complete this activity. Try extending this program by adding features or modifying existing methods to gain a better understanding of object manipulation in Java.
Transcribed Image Text:**Lab Activity: 26.21.1 - The toString() Method** **Current File: LabProgram.java** ```java import java.util.Scanner; public class LabProgram { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); int inputNum = scnr.nextInt(); Number yourNum = new Number(inputNum); System.out.print(yourNum); } } ``` **Description:** In this lab activity, you'll be exploring the `toString()` method in Java. The program includes the basic setup for a Java class named `LabProgram`. It demonstrates the use of a `Scanner` object to read an integer from user input. This integer is then used to create an instance of an object named `yourNum` from a class called `Number`. Finally, it prints the object `yourNum`. **Key Concepts:** - **`Scanner` Class**: Used for obtaining input of primitive types like `int`. - **Integer Input**: Captures a single integer input from the user. - **`Number` Class**: Assumes existence; likely contains an overridden `toString()` method for meaningful output. - **Printing Objects**: The `System.out.print(yourNum);` statement will call the `toString()` method of the `Number` class, if it exists, to convert the object to a `String` representation for printing. Make sure you implement or verify the `Number` class and its `toString()` method to complete this activity. Try extending this program by adding features or modifying existing methods to gain a better understanding of object manipulation in Java.
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